: an antihistamine administered in the form of its hydrochloride C21H23NO3·HCl as eye drops for the treatment of itching associated with allergic conjunctivitis

Note: Olopatadine is marketed under the trademarks Pataday and Patanol.

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Cite this Entry

“Olopatadine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/olopatadine. Accessed 8 Jul. 2026.

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